"I watched it the first time, I'll never watch it again," he said. "It's not something I want to see."

He was open about his battles with depression following the death of his son and in 2017, Entertainment Weekly reported that the star had taken a leave of absence from his show to deal with mental health issues.

St. John's last activity on Twitter was Jan. 21 when he retweeted a tweet which said "Grieving the loss of a child is a process. It begins on the day your child passes, and ends the day the parent joins them."

He was set to marry his model girlfriend Kseniya Mikhaleva.

In September, he shared a photo of the engagement ring on his Instgram account with the photo caption "She said yes."